<!-- HTML header for doxygen 1.8.13-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<link rel="icon" type="image/x-icon" href="favicon.ico" />
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.13"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>chigraph: lib/support/src/LibCLocator.cpp Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtreedata.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript">
  $(document).ready(initResizable);
</script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr style="height: 56px;">
  <td id="projectlogo"><img alt="Logo" src="chigraphDoxygenIcon.png"/></td>
  <td id="projectalign" style="padding-left: 0.5em;">
   <div id="projectname">chigraph
   &#160;<span id="projectnumber">master</span>
   </div>
   <div id="projectbrief">Systems programming language written for beginners in LLVM</div>
  </td>
 </tr>
 </tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.13 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search",false,'Search');
</script>
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
$(function() {
  initMenu('',true,false,'search.php','Search');
  $(document).ready(function() { init_search(); });
});
</script>
<div id="main-nav"></div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
  <div id="nav-tree">
    <div id="nav-tree-contents">
      <div id="nav-sync" class="sync"></div>
    </div>
  </div>
  <div id="splitbar" style="-moz-user-select:none;" 
       class="ui-resizable-handle">
  </div>
</div>
<script type="text/javascript">
$(document).ready(function(){initNavTree('LibCLocator_8cpp_source.html','');});
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
     onmouseover="return searchBox.OnSearchSelectShow()"
     onmouseout="return searchBox.OnSearchSelectHide()"
     onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>

<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0" 
        name="MSearchResults" id="MSearchResults">
</iframe>
</div>

<div class="header">
  <div class="headertitle">
<div class="title">LibCLocator.cpp</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="LibCLocator_8hpp.html">chi/Support/LibCLocator.hpp</a>&quot;</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;</div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">// This requires 3 separate implementations--one for windows, one for linux, and one for macOS.</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;</div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="keyword">namespace </span>fs = boost::filesystem;</div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor">#if defined __linux__ || defined __APPLE__</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;</div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &lt;boost/algorithm/string/classification.hpp&gt;</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &lt;boost/algorithm/string/split.hpp&gt;</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &lt;cstdlib&gt;</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;</div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="Result_8hpp.html">chi/Support/Result.hpp</a>&quot;</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="Subprocess_8hpp.html">chi/Support/Subprocess.hpp</a>&quot;</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;</div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacechi.html">chi</a> {</div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">// The linux implementation finds gcc and runs what&#39;s basically gcc -xc -E -v - &lt; /dev/null which</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">// prints out the search paths.</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;Result <a class="code" href="namespacechi.html#a2a10381635e0ce797c881880ae0adb55">stdCIncludePaths</a>(std::vector&lt;boost::filesystem::path&gt;&amp; toFill) {</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;    Result res;</div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;    <span class="comment">// first see if CHI_STDC_INCLUDE_PATH is defined in the environment</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    <span class="keyword">auto</span> envIncPath = std::getenv(<span class="stringliteral">&quot;CHI_STDC_INCLUDE_PATH&quot;</span>);</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;    <span class="keywordflow">if</span> (envIncPath != <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;        std::string envIncPathStr = envIncPath;</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;        std::vector&lt;std::string&gt; parsedOut;</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;        boost::algorithm::split(parsedOut, envIncPathStr, boost::algorithm::is_any_of(<span class="stringliteral">&quot;:&quot;</span>));</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;        std::transform(parsedOut.begin(), parsedOut.end(), std::back_inserter(toFill),</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;                       [](<span class="keyword">auto</span> p) { <span class="keywordflow">return</span> fs::path{p}; });</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;        <span class="keywordflow">return</span> res;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    }</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <span class="comment">// find gcc</span></div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    std::string              colonSeparatedPath = std::getenv(<span class="stringliteral">&quot;PATH&quot;</span>);</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    std::vector&lt;std::string&gt; paths;</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    boost::algorithm::split(paths, colonSeparatedPath, boost::algorithm::is_any_of(<span class="stringliteral">&quot;:&quot;</span>));</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    fs::path gccPath;</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>&amp; possiblePath : paths) {</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;        <span class="keyword">auto</span> pathToCheck = fs::path{possiblePath} / <span class="stringliteral">&quot;gcc&quot;</span>;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;        <span class="keywordflow">if</span> (fs::is_regular_file(pathToCheck) || fs::is_symlink(pathToCheck)) {</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;            gccPath = pathToCheck;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;            <span class="keywordflow">break</span>;</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;        }</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    }</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    <span class="keywordflow">if</span> (gccPath.empty()) {</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;        res.addEntry(<span class="stringliteral">&quot;EUKN&quot;</span>, <span class="stringliteral">&quot;Failed to find gcc in path&quot;</span>, {{}});</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;        <span class="keywordflow">return</span> res;</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    }</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    <span class="comment">// run it!</span></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    Subprocess sub{gccPath};</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    sub.setArguments({<span class="stringliteral">&quot;-xc&quot;</span>, <span class="stringliteral">&quot;-E&quot;</span>, <span class="stringliteral">&quot;-v&quot;</span>, <span class="stringliteral">&quot;-&quot;</span>});</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    <span class="comment">// the spicy output is in stderr</span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    std::string stdErrData;</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    sub.attachStringToStdErr(stdErrData);</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    res += sub.start();</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <span class="keywordflow">if</span> (!res) { <span class="keywordflow">return</span> res; }</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    res += sub.closeStdIn();</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    <span class="keywordflow">if</span> (!res) { <span class="keywordflow">return</span> res; }</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    <span class="keywordtype">int</span> err = sub.exitCode();</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    <span class="keywordflow">if</span> (err != 0) {</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        res.addEntry(<span class="stringliteral">&quot;EUKN&quot;</span>, <span class="stringliteral">&quot;Failed to run GCC&quot;</span>, {{<span class="stringliteral">&quot;Error code&quot;</span>, err}, {<span class="stringliteral">&quot;Stderr&quot;</span>, stdErrData}});</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        <span class="keywordflow">return</span> res;</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    }</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    <span class="comment">// parse the stderr</span></div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    <span class="comment">// it looks something like this:</span></div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    <span class="comment">//</span></div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    <span class="comment">// &lt;random stuff&gt;</span></div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    <span class="comment">// #include &lt;...&gt; search starts here:</span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    <span class="comment">//  &lt;include path&gt;</span></div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    <span class="comment">//  ...</span></div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    <span class="comment">// End of search list.</span></div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    <span class="comment">// split it into lines</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    std::vector&lt;std::string&gt; stdErrLines;</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    boost::algorithm::split(stdErrLines, stdErrData, boost::algorithm::is_any_of(<span class="stringliteral">&quot;\n&quot;</span>));</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    <span class="comment">// find #include &lt;...&gt; search starts here:</span></div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    <span class="keyword">auto</span> iter =</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        std::find(stdErrLines.begin(), stdErrLines.end(), <span class="stringliteral">&quot;#include &lt;...&gt; search starts here:&quot;</span>);</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    <span class="keywordflow">if</span> (iter == stdErrLines.end()) {</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;        res.addEntry(<span class="stringliteral">&quot;EUKN&quot;</span>, <span class="stringliteral">&quot;Failed to find \&quot;#include &lt;...&gt; search starts here:\&quot; in gcc stderr&quot;</span>,</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;                     {{<span class="stringliteral">&quot;Stderr&quot;</span>, stdErrData}});</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;        <span class="keywordflow">return</span> res;</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    }</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    <span class="comment">// start appending</span></div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    ++iter;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    <span class="keywordflow">for</span> (; iter != stdErrLines.end() &amp;&amp; *iter != <span class="stringliteral">&quot;End of search list.&quot;</span>; ++iter) {</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        assert((*iter)[0] == <span class="charliteral">&#39; &#39;</span>);</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;        std::string incPath = iter-&gt;substr(1);  <span class="comment">// remove the first char, it&#39;s gonna be a space</span></div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;        <span class="comment">// append it to `toFill`</span></div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;        <span class="keywordflow">if</span> (fs::is_directory(incPath)) { toFill.push_back(incPath); }</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    }</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    <span class="keywordflow">return</span> res;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;}</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;}  <span class="comment">// chi</span></div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;<span class="preprocessor">#elif defined WIN32</span></div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;<span class="comment">// it actually works fine without anyting! yay!</span></div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="Result_8hpp.html">chi/Support/Result.hpp</a>&quot;</span></div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacechi.html">chi</a> {</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;Result <a class="code" href="namespacechi.html#a2a10381635e0ce797c881880ae0adb55">stdCIncludePaths</a>(std::vector&lt;boost::filesystem::path&gt;&amp; toFill) { <span class="keywordflow">return</span> {}; }</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;}  <span class="comment">// namespace chi</span></div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="Subprocess_8hpp_html"><div class="ttname"><a href="Subprocess_8hpp.html">Subprocess.hpp</a></div></div>
<div class="ttc" id="Result_8hpp_html"><div class="ttname"><a href="Result_8hpp.html">Result.hpp</a></div><div class="ttdoc">Defines the Result class and related functions. </div></div>
<div class="ttc" id="namespacechi_html_a2a10381635e0ce797c881880ae0adb55"><div class="ttname"><a href="namespacechi.html#a2a10381635e0ce797c881880ae0adb55">chi::stdCIncludePaths</a></div><div class="ttdeci">Result stdCIncludePaths(std::vector&lt; boost::filesystem::path &gt; &amp;toFill)</div><div class="ttdoc">Gets the location of the standard C library to include. </div></div>
<div class="ttc" id="LibCLocator_8hpp_html"><div class="ttname"><a href="LibCLocator_8hpp.html">LibCLocator.hpp</a></div></div>
<div class="ttc" id="namespacechi_html"><div class="ttname"><a href="namespacechi.html">chi</a></div><div class="ttdoc">The namespace where chigraph lives. </div><div class="ttdef"><b>Definition:</b> <a href="BitcodeParser_8hpp_source.html#l00012">BitcodeParser.hpp:12</a></div></div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
  <ul>
    <li class="navelem"><a class="el" href="dir_97aefd0d527b934f1d99a682da8fe6a9.html">lib</a></li><li class="navelem"><a class="el" href="dir_2e3059805f6f515f917d8ef98610afb5.html">support</a></li><li class="navelem"><a class="el" href="dir_d14593dd2e0b81bf08b995b9ca598a47.html">src</a></li><li class="navelem"><b>LibCLocator.cpp</b></li>
    <li class="footer">Generated on Sat Sep 16 2017 17:41:35 for chigraph by
    <a href="http://www.doxygen.org/index.html">
    <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.13 </li>
  </ul>
</div>
</body>
</html>
